What's your favourite time-wasting website?

We're looking for recommendations of 'time-wasting' websites - where do you go on the web to kill a bit of time? Which sites suck up your time, and which ones are most fun, without really being useful?

We'll print the top 10 sites in PC Advisor, along with the names of their recommenders. Have fun searching!

Has to be this site. Being able to help someone resolve a problem with their PC and the answer works is kind of satisfying. When your answer is totally ignored, without a feedback, it's down putting to say the least. Wouldn't you agree FE?